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My old foreman in Toledo taught me to tap the riser with a hammer to check for solid metal, but I just learned that's a bad idea.
I was helping a new guy at the shop and saw him do it, and the riser broke off clean. Our quality manager, Frank, explained that the thermal shock can cause hidden cracks. Now I use a small propane torch to gently heat the side and watch for liquid metal to weep out instead. Has anyone found a better way to check a riser without risking damage?
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the_sean6mo ago
I hear you, but that "zero breaks" record from @carter.reese sounds like pure luck to me. A clean break from a tap is a huge red flag the metal was already stressed.
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caleb_gibson5mo ago
Three hammers and two cracked sinks later I finally learned to just let the tap do the work. Still haven't got a zero break record though.
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carter.reese6mo ago
Nah, that hammer tap is classic for a reason. Been doing it for twenty years with zero breaks. Your guy probably just hit it wrong or had a bad casting.
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